The Archos Clipper is available in black for 30$, it hasn’t screen and all keys are on the front panel.
Equipped with 2 GB of storage, supports MP3 and WMA formats, charging of the battery is done via USB and sustain up to 11 hours per charge. The dimensions of the device are 52 x 27 x 12 millimeters and weighs 14 grams. All you need to listen your mp3s. That’s all.